US Bridges

Mukilteo Blvd over Edgewater Creek

PoorClosed to traffic

Snohomish County, Washington · 0.07 W JCT Shore Ave · Structure no. 085593000000000

Built
1946
79 years old
Condition
Poor
inspected October 2022
Type
Girder and Floorbeam System
Concrete Continuous
Length
356 ft
5 main spans
Daily traffic
4,883
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Mukilteo Blvd over Edgewater Creek is a concrete continuous girder and floorbeam system carrying Mukilteo Blvd over Edgewater Creek in Snohomish County, Washington. It was built in 1946, so it is 79 years old, older than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: closed to all traffic.

It carries about 4,883 vehicles a day, roughly 5% of them trucks, projected to reach 5,860 by 2042. The structure is 356 ft (108.5 m) long and 37 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

CarriesMukilteo Blvd
CrossesEdgewater Creek
Location0.07 W JCT Shore Ave
RouteCity Street 420
Coordinates47.95103, -122.28629
Functional classUrban Other Principal Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2022
Inspection intervalevery 24 months
Operating statusClosed to all traffic
ScourFoundations stable; scour above top of footing
Structural evaluation0: Immediate repair necessary to put back in service
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating16.1 US tons
Inventory rating9.6 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadH 15
Structure length356 ft (108.5 m)
Longest span91 ft (27.7 m)
Deck width37 ft (11.2 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,883 (2022)
Projected traffic5,860 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed11.2 mi (18 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$13.2 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Mukilteo Blvd over Edgewater Creek built?

It was built in 1946, making it 79 years old in 2025.

What condition is Mukilteo Blvd over Edgewater Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in October 2022.

How much traffic does Mukilteo Blvd over Edgewater Creek carry?

About 4,883 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is Mukilteo Blvd over Edgewater Creek?

The structure is 356 ft (108.5 m) long with a longest span of 91 ft (27.7 m) and a deck 37 ft wide.

Who owns Mukilteo Blvd over Edgewater Creek?

It is owned by the City or Municipal Highway Agency.